For the canny passenger there is a great and little-used alternative to being self-loading - the wheelchair service! At STN, for a mere £12.50 you sit comfortably while being pushed to the head of the checkout queue (plus anyone travelling with you), are taken to any shops you feel like visiting, ditto spacious loo, and get loaded onto a front seat on Ryanair's finest.
All this is done in reverse at the other end.
And as nobody actually asks if you are disabled (silly question, presumably ) - it is not even necessary to tell a porky to avail oneself of this excellent service!